Apparatus for filtering sewage.



I B. WILKIB.v APPARATUS PoR PILTERING SEWAGE.

APPLICATION FILED 00T. 25, 1909.

Patented Aug. 23, 1910.

r /MMI WITNESSES:

BOYD WILKIE, OF MOUNT VERNON, NEW YORK.

.APPARATUS FOR FILTERING SEWAGE.

Specieation of Letters Patent. t Patgnged Aug.

Application filed October 25, 1909. Serial No. \524,314.

To all whom it may concern: i Be it known that I, BOYD VVILKIE, a citizen of the United States, and residing at Mount Vernon, in the county of Testchester and State of New York, have invented certain new and useful Improvements in Apparatus for Filtering Sewage, of which the following Yisa"s/pecification, such as will en- 'able those skilled in the art to which it appertains to make and use the same.

It is customary in large cities and towns to first purify, to. some extent, sewage water so as to prevent the pollution of rivers,

lakes or bays into which the said sewage l5 water is discharged, and it is also custo1n ary, in doing thisyto take the sewage from lthe street sewers and to discharge it into receiving basins from which the sewage is discharged through a distributing gallery into a settling basin, from which the'liqui'd or watery portion of the sewage is siphoncd into distributing pipes from which it is dis' charged, into or upon filtering beds, or into a tank or tanks, or other suitable receivers,

having filtering bed bottoms, and after filtering through these beds .or bed bottoms the l said 'liquid or the water resulting from said filtration is discharged by means of drain pipes into a river, lake, bay or other receiver l in the usual way.

rI`his invention relates particularly to the discharge of liquid. sewage or sewage water from the distributing pipes into the filtering tanks or basins, or onto the filtering beds or bottoms of said tanks or basins, and

the said invention relaties more particularly to the use of splashy cups or spraying devices of particular form and'mounttal on or supported above said filtering beds in such manner that the liquid sewage from the said pipes falls on said splash cups or spraying devices aiid is distributed equally and evenly over the entire surface of the filtering bed or beds so that the filtration of 10 said liquid through said beds and the purification thereof during such filtration will be facilitated and properly performed so that the water which isdischarged through the drain pipe or pipes will be in as nearly a pure condition is/possible under the circumstances, and "f tlf/e invention described and claimed hereinconsists of the means employed for discharging the liquid from the distributing pipes into the splash'cups or spraying devices.

The invention is fully disclosed in the following specification of which the accompanying drawing forms a part, in which the separate parts of my improvement are de'signated by suitable reference characters in each of the views, andv in which Figure l is a transverse section of a part of a filtering tank employed in a sewage purification system and showingthe method of discharging the liquid sewage thereinto and showing also my improvement. Fig. 2 a plan View of the construction shown in Fig. l, Fig. 3 a section on the line 3-3 of Fig. Q and en an enlarged scale; and, Fig. 4t a sectional view of a spraying device employed.

In adrawing forming fication I have shown at a a part of a 'filtering tank into which, in aniapparatusl for purifying sewage of the class referred to, the liquidsewage after leaving the settling basin or basins is discharged by the distributing pipe or pipes o. y The bottom of this bed is composed of concrete, and placed thereupon is a filtering bed c which conof four layers c2, c, o4 and composed of broken stone, the bottom layer of being Vcomposed of coarse broken stone, the

part of this specinext layer c4 thereoverofmore'finely divided stone, while the nent layer c3 consists of still more finely divided stone, and the top layer cL of very finely divided stone.

On thc bottom o of the filtering bed is placed, in the fornrof construction shownl a main drain pipe Z with which is connected branch drain pipes (Z2, and the water after filtering through the filtering bed c is collected by these drain pipes and carried off and discharged into an adjacent river, hay or other receiver in the usual manner.

In the construction shown thc spraying devices e consist of a support. comprising a base e having a tubular upright member c3 in which is placed a vertical adjustable tubular support c4 on the top of which is supported a splash cup c having a stem c adapted to enter the top part cA1 of the supporti, In lytctice these spraying devices are plaefd directly under the discharge points ol. the pipes t) or branch pipes b2 connected therewith and from which the sewage or sewage water may be discharged and any desired l:number of the spraying devices c may be employed, and said spraying devices may be adjustable so that the splash cups e5 will be in a different horizontal plane, if desired, the object being downwardly VAgreatest possible etliciency in the operation thereof. The splash cup or cup-shaped device e, any desired number of which rnay be employed, is provided with a riin c7 which may be horizontal in cross section or concavo convex in cross section and this rini facilitates the even distribution of water` or'liquid sewage over the filtering bed or beds and experience determined that the operation of this splash cup or cups is-inuch in ore effective when provided with the riin or flange e7 than when no such riin or flange is employed.

In discharging the liquid sewage from the pipeor pipes b and 52,1 connect with said pipe or pipes a coupling'head f to which is secured a guard or shield f2 which is preferably tubular in form and which extends a predetermined distance. The vcoupling head f is provided with a threaded `tube neck f3 which is screwed into a coupler f4 connected with the pipe or pipes Z) or b2, andwithin said coupler head is placed a central nozzle or nozzle tube g which extends downwardly into the guard or shield f2 and through which the. liquid sewage water is discharged, as shown at la. The object of the guard or shield is to prevent the/wind froni interfering with the vertical fall of the sewage water so that it will drop squarely in the splash cups c5 which are placed centrally under the discharge tube or nozzle g andV it will be understood that one of these guards or shields f2 is used in Aconnection with each of the splash cups c5 or with each of the spraying devices and my invention is not limited to the. particular forni or construction of the said guard or shield nor to thc particular ineans employed `for connecting it with the pipe or pipes 6*?.

This inventionhas no bearing on the gen eralconstruction of the sewage purification systeni herein shown and described but re.- lates particularly to the distributing pipes -b2 and to the spraying` devices c provided with the splash cups c5 and the ineans for discharging the sewage from said pipes into said splash cups. l

Having fully described iny invention what I claini as new, and desire to secure by Letters Patent is 1. An apparatus of the class described, said apparatus involving liquid distributing pipes and beds adapted to receive said liqnids, and spraying` devices supported on said beds and into which the liquids are d1scharged freni said pipes.

2. An apparatus of the class described,

`said apparatus involving liquid distributing pipes and beds adapted. to receive said liquids, and spraying devices supported on said beds and into which the liquids are discharged from said pipes, said spraying devices being vertically adjustable.

An apparatus of the class described,

uids, and spraying devices supported ou saidv Y beds and into which the liquids are discharged froin said pipes, said spraying devices consisting of vertically adjustable stands and saucer-shaped receivers detachably mounted thereon, said saucer-shaped rcceivers being provided at the top edge thereof with annular outwardly directed flanges.

5. An apparatus of the class described, said apparatus involving liquid distributing pipes and beds adapted to receive said liquids, and spraying devices supported on said beds and into which the liquids are dischar ed froin said pipes, said pipes being provide with downwardly directed nozzles, and shields er guards inclosing said nozzles and extending downwardly therefrom.

t5. An apparatus of the class described, said apparatus involving liquid distributiinr pipes and beds adapted to receive sai( liquids, and spraying devices supported on said beds and into which the liquids are discharged froui said pipes, said spraying dcviees consisting of vertically adjustable stands and saucer-shaped receivers dctachably inou'nted thereon, and said pipes being provided with downwardly directed nozzles, and shields inclosing said nozzles and extending downwardly therefrom.

in testii'nony that I claim theforegoing as nly invention l have signed my naine in presence ofthe subscribing witnesses this 22nd day of October 1909.

BOY D WILK lid.

Titnesses 1 Gao. W. ELLion'r, lViLLiAiu S. COFFEY 

